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| Catalog No. | Product Name | Size | List Price (US$) | Quantity |
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Conditions of optimal PIgR Protein performance should be determined experimentally by the investigator.
Price/availability/specifications subject to change without notice. Unless otherwise indicated, our catalog and customized products are for research use only and not intended for human or animal diagnostic or therapeutic use.
Phone: 1-617-401-8149
Fax: 1-617-606-5019
Email: message@sydlabs.com
Or leave a message with a formal purchase
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Introduction
The human polymeric immunoglobulin receptor (pIgR) is a 100 kDa type I tran-smembrane glycoprotein. Its precursor has 764 amino acid, contains an 18 aa signal sequence, a 620 aa extracellular region, a 23 aa transmembrane fragment, and a 103 aa cytoplasmic domain. pIgR is synthesized by secretory epithelial cells with five Ig-like domains in extracellular region, and transfer to the basolateral plasma membrane. For IgA and IgM polymers, in addition to heavy chains and light Ig chains, a short polypeptide named joining chain (J chain) is also contained and required. pIgR can bind larger polymers of IgA (pIgA) and pentameric IgM as as a carrier that transports IgA and IgM across epithelium. The receptor-ligand complexes are endocytosed and transcytosed to the apical surface, then proteolytic cleavage of the sixth extracellular domain of pIgR and generate secretory IgA (SIgA), the pIgR fragment is referred to as secretory component (SC). SIgA is a important component of the mucosal immune system. SC is anti-microbial properties and protects SIgA from proteolytic degradation.
BP001397-C381: Recombinant Human Polymeric immunoglobulin receptor (PIgR) Protein
Source: HEK 293-derived.
Recombinant Human Polymeric immunoglobulin receptor (PIgR) Protein is expressed with sequence (Lys19 Arg638) of Human PIGR fused with a polyhistidine tag at the C-terminus.
Purity: > 95% by SEC-HPLC and reducing SDS-PAGE.
Endotoxin: < 0.1 ng/ug (1 EU/ug).
Formulation: Lyophilized from a 0.2 um filtered solution of 20 mM PB, 150 mM NaCl, pH 7.2.
Reconstitution: Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 ug/ml. Dissolve the lyophilized protein in 1X PBS. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Shipping: The product is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month, 2 to 8°C under sterile conditions after reconstitution.
3 months, -20 to -70°C under sterile conditions after reconstitution.
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